Update command for running elasticsearch.

docs/installation/installation-virtualenv.rst

@@ -205,7 +205,7 @@ Running Mozillians
 
    and start `elasticsearch` server again::
 
-     (venv)$ ./elasticsearch-0.90.10/bin/elasticsearch
+     (venv)$ ./elasticsearch-1.2.4/bin/elasticsearch -d
 
 Have fun!